Does this support namespaces?

Yes. The formatter correctly handles namespace prefixes (e.g., book:title) and preserves them in both beautified and minified output.

What does validation check?

Validation checks for mismatched closing tags, unclosed elements, and reports the line number where each issue occurs.

Are CDATA sections preserved?

Yes. CDATA sections ( ) are preserved exactly as-is during formatting.

What about the XML declaration?

The declaration is preserved by default. You can toggle this off in the options.

Yes. All processing runs in your browser. No XML data is sent to any server.

XML Formatter

Beautify or minify XML with validation, namespace support, and error highlighting.

Auto

Indent:TabsCommentsDeclaration

Input XML

Formatted Output

About this tool

Free online XML formatter and minifier. Beautify XML documents with configurable indentation. Validates tag structure with line-number error reporting. Supports namespaces, CDATA, processing instructions, and comments.

xml formatterxml beautifierxml minifierformat xmlpretty print xmlxml validatorxml indentxml tidy

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XML Formatter

Beautify or minify XML with validation, namespace support, and error highlighting.

Auto

Indent:TabsCommentsDeclaration

Input XML

Formatted Output

About this tool

Free online XML formatter and minifier. Beautify XML documents with configurable indentation. Validates tag structure with line-number error reporting. Supports namespaces, CDATA, processing instructions, and comments.

xml formatterxml beautifierxml minifierformat xmlpretty print xmlxml validatorxml indentxml tidy